Alien Introgression in Wheat Cytogenetics, Molecular Biology, and Genomics

31

Table 2.5

The diploid species of the wheat group (the genera

Amblyopyrum

, Aegilops

, and

Triticum

)

Genus

Species

a^

Synonyms

Genome

b^

Genome size

c^

(Mean ± SD of 1C DNA in pg)

Region in the group distribution area

Natural groups

d^

Amblyopyrum

muticum

Ae. mutica, Ae. tripsacoides

T

5.82 ± 0.147

Central

I

Aegilops

speltoides

Ae. speltoides

var

. ligustica

or

var.

aucheri

S

5.81 ± 0123

Central and somewhat southern

II

searsii

• 
  

s S

6.65 ± 0.091

Southern

bicornis

• 
  

b S

6.84 ± 0.097

Southern

longissima

• 
  

l S

7.48 ± 0.082

Southern

sharonensis

Ae.

longissima

var.

sharonensis

l S

7.52 ± 1.000

Southern

tauschii

Ae. squarrosa,

T.aegilops

D

5.17 ± 0.087

Eastern

III

caudata

Ae, markgrafi i, T, djchasians

C

4.84 ± 0.089

Central

IV

comosa

Included

Ae. heldreichii

M

5.53 ± 0.052

Western

V

uniaristata

N

5.82 ± 0.105

Western

umbellulta

U

5.38 ± 0.073

Central

VI

Triticum

monococcum.

subsp.

aegilopoides

Var

boeoticum

, var.

thaudar

A

m^

6.45 ± 0103

Central

VII

monococcum.

subsp

.^

monococcum

A

m^

6.48 ± 0.043

Domesticated

urartu

A

6.02 ± 0.062

Central

a Species designation after van Slagern (

1994

)

b Genome designations according to Kimber and Tsunewaki (

1988

)

c Genome size from Eilam et al. (

2007

)

d Natural groups based on pairing data in inter-specifi

c and inter-generic hybrids (Kihara

1954

)^

2 Origin and Evolution of Wheat and Related Triticeae Species